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Android:从Java文件动态改变线性布局的背景图像

I wanted to ask how to change background image of a LinearLayout using code in a Java file. Here is what i came up with, but it makes the app crash. methods which I use to set the image of the

当按下回退按钮时防止响应路由器重新加载API调用

I have an app that displays a list of items. One can then click on an item and this takes you to an about page. When you click back, it should ideally keep the list as is. However, the router appears

一个Linux进程使用1999% CPU,它将重新启动后,我杀了它。这是一个危险的过程吗?

Recently, I found my server(linux) runs very slow, so I use command top to find the reason and found a process occupies 1999 %CPU. I think this is the process that make my server slow. After I kill it

我的Qopunl小部件没有出现?

main.cpp #include "QtGuiApplication4.h" #include <QtWidgets/QApplication> #include "megui.h" int main(int argc, char *argv[]) { QApplication a(argc, argv); megui test; test.show();

Bootstrap 4.1.1页脚中心对齐与右边框

Here is my design for footer Here is my code for footer design based on Bootstrap 4.1.1 .mainfooter-area { background: #404044; padding: 100px 0; } .mainfooter-area h2 { color: #

Android使用状态项定制SPILN风格

so i m creating a simple spinner and using a specific style. <Spinner android:id="@+id/spinner_lang" style="@style/spinner_style" android:

什么样的代码用于HTTP实时流(HLS)的自适应比特率流在Java?

What code to use for HTTP Live Streaming (HLS) for implementing adaptive bit-rate streaming in Java?

用JAVA API获取索引文档时获取弹性响应的空响应

Am fetching the indexed documents from elastic search using Java API. But am getting Null as a response from elastic search. But if i search with the same query using kibana with curl script am

数组在JSON时不会更新。

I have this code below that is able to transfer the array value to another array when i click on it for example when i click on lime it will move into my Green Array The problem is after i JSON.

如何在JavaScript中创建差异检验器

I want to create diff in javascript in which it can check difference line by line and check each word and spaces. And if found any difference then that difference should be recognized as a highlight (

将外部域名连接到AWS S3 Webiste

I want to host a static website on Amazon S3. Created the relevant buckets - testing them ok. Now I have a domain name i've registered with EuroDNS - www.gopropel.io - I can't find how to connect it

我怎样才能用蟒蛇画一个漂亮的蟒蛇?

i have a homework to draw a spiral(from inside to outside) in python with turtle, but i cant think of a way to do that,beside what i did its need to be like this i tried to do it like that: but its

应用程序数据使用寿命

Im looking to find the data usage of all apps ever installed on my phone with the install, removal dates. Something like app name ----- install date ------ removal date ------ data used youtube

Shell脚本调用错误SH:第2行

I recently got to work on a project earlier made by someone I don't know. I've searched the complete internet before posting this question but didn't find any help. I'm getting the Shell Script

角度2事件,打印功能超载

So my issue is that I have a canvas element with two events attached to it (mousemove, touchmove), both are expected to execute the very same function in a corresponding Typescript class,

组合框不被NITro PRO 8验证

Below is a simple pdf file I used in Nitro pro 8. PDF file of combobox Here I have added a combo box (drop down menu) which fill color (back color) is white by default. There are three options "One"

在角5中不能正确访问本机元素。

I have a problem like this. I am making report generation part in angular 5 using jsPdf. This is my component.html file part. <div class="content-wrapper"> <div class="container-fluid">

IVIEWORCTORACLE扩展器无法解析VIEW端口

I create custom razor location everything working fine except _ViewImports.cshtml. Here is my code : public class LocationExpander : IViewLocationExpander { public void PopulateValues(

节点JS集群环境下CRON作业的多次运行

i have set up Node JS server cluster environment to fully utilize all the cores of my server. There is a Cron Job which runs every day 08 O'clock to run some tasks. But due to clustering it runs 4

C在控制台加载杆上使用功率/时间

I'm currently new to programming and don't know, how to let the program process while the loading bar is running. I wanted to display the loading bar and check, wether the program is finished

允许用户将链接从应用程序发送到另一个人,然后在单击时打开应用程序

I'm not even sure if this is possible, but this is what I would like to do. Give the user an option to share some content (such as an inventory item). This is easy enough to do with and Intent using

使用可选过滤器生成规范

LoginService public List<Login> getLogins(Optional<String> attr1, Optional<String> attr2, Optional<String> attr3) { Specification<Login> loginSpecs; // Doesn't

如何正确关闭JMS连接

I have the following piece of code to poll my Dead Letter Queue in JMS. Message m = mconsumer.receive(3000L); while (m != null) { try { sendMessageToDB(m); } catch

单击GWT站点上未触发的事件

I am attempting to automate testing on the client side of a GWT built site. I have been able to run through all the DOM elements and find the span element which is clickable I tried the click() method

变换逻辑-信息学到蜂箱

For a column I need to convert the informatica logic To_date($$RUN_DATE,'yyyy-mm-dd') to hive. I guess the same will work for hive as well ? Pleae let me know if any other approach.

Python Velyon的建立

MacOSX: 10.12.6 Iterm2:bash shell Vagrant 2.0.2 ansible version: 2.4.3.0 pip version: 10.0.1 from /usr/local/lib/python2.7/site-packages/pip (python 2.7) pyenv version: 1.2.3 Python versions:

安装Python PIP的错误

after install python-pip using "$ sudo apt-get install python-pip" when i check version "$ pip -V" showing error "bash: /usr/local/bin/pip: No such file or directory " can anyone help please???

如何在Java中解析XML对象

I'm trying to parse a string object that carries simple XML. I have parsed XML files at the past but I can't use the code because it refers to files and not strings- please review the code I used for

索引错误:

I have created a function where I need to pass data frame I get shape and return me df.head() def shape_of_df(df): tup = df.shape print('Shape of df is Rows :{0[0]},column:{0[1]}

在Android工作室访问相机之前,我需要按下两次按钮。

I'm currently working on an Android app that allows me to access the camera and upon clicking one button, I switch to the front cam. I click another button, I go back to the rear cam. However, I'm

塞茨克罗利

Im doing an calendar apps, i wish to scroll my scrollview in the fragment to a specific Y-position as presenting the current time, i tried this code in an ACTIVITY, it successes, but it is not working

离子3文件上传上载对象对象

I used below code for file upload to server in ionic 3 getImage() { const options: CameraOptions = { quality: 100, destinationType: this.camera.

如何保存和恢复TF-估计器模型

I would like to save and restor my tf.estimator model. Although I tried to follow other related issues on stackoverflow, I could not be successful. The following input_fn can provide the data to be

PyQT5,如何使用数据库服务器建立连接检查

I have used Qt designer to create two different windows, Login_ui.py and Register_ui.py. Here is the python scripts for the window. Then i created APP.py file as main and DB.py for database. How

将长URL转换为TyyURL

I am trying to solve the following problem: https://leetcode.com/problems/encode-and-decode-tinyurl/description/ I went through a couple of answers on SO, as well as other forums online. I am

如何利用Gradle构建工件版本

When using Maven, it's easy to look up latest version of SNAPSHOT artifact by going to parent's pom.xml: https://github.com/apache/maven-compiler-plugin/blob/master/pom.xml#L33 But where do I look

警告:FoO的数据已经达到0.0323 GB的每日上限和收集您的应用程序

I've been getting these alerts lately, however if I search events in my Application Insights account, I only have 5 events in the last 24 hours, and 7 events in the last 48 hours. The largest event

Python不是.LIB

I think I have built it properly. I have other boost libraries working. I am getting the following error Error: *SNK1104 cannot open file 'boost_pythonPY_MAJOR_VERSIONPY_MINOR_VERSION-vc141-mt-x32-

从弹出式弹出窗口访问属性

I have a page with several buttons that all open the same modal using Magnific Popup. However I need to customize the popup for each button according to the calling button's data- attributes. So I

如何盘旋盘旋

I'm trying to achieve this look like on hover below. When I hover on text or a block, then should I have a look like this. How I can do this? I couldn't find any example with style like this. Below I

如何对RNN进行正确的数据缩放

I have recently completed a course on Neural Networks/Deep Learning and have completed some projects successfully. I am now looking at using RNN's to look at making fantasy football predictions. I

脸谱网或谷歌登录CordoVA应用程序等待2分钟后返回结果

I am kind of stuck and looking for ideas how to solve this problem: My app is in ionic v1, (ionic 1.3.4), with cordova 8.0.0 . For social login I am using facebook cordova-plugin-facebook4 (v 2.1.0)

如何在单击注销后知道用户是否到达登录页面?丹戈

I am using the django's built-in auth module for user authentication. urls.py url(r'^accounts/logout/', auth_views.logout, kwargs={'next_page': reverse_lazy('login')}), url(r'^accounts/login/',

GATLIN:转换响应并使用ReGEX/JJSONPATH验证响应

I have a situation where my response is encrypted. In order to decrypt it, I need to get hold of the session because there are some variables on the session that are needed to decrypt. So far I have

暹罗图像相似性网络

Where can I find details to implement siamese networks to perform image similarity and to retrieve the most similar image from a dataset It is difficult to get a large number of image data for all

游戏人生的C代码。我不

This is the description of the question: Every cell interacts with its eight neighbours, which are the cells that are horizontally, vertically, or diagonally adjacent. At each step in time, the

警告:使用版本为0.0.172的JavaFX运行时,使用版本为0.0.1的JavaFX API加载FXML文档

Please help! I am newbie to JavaFx I got this error when trying to set setScene *.fxml file javafx.fxml.FXMLLoader$ValueElement processValue WARNING: Loading FXML document with JavaFX API of version

不带python的Python游戏实时评分系统

I'm trying to add a real time scoring system to my Python game. But, it writes the new score over the old score. It means that 1 is written over 0; 2 over 1, etc. Do not suggest solutions that

发送后消息WMYKEYDOWT/No.NotoPad编辑控件与VKYF5一起工作,但不使用普通字母

I am trying to send WM_KEYDOWN and WM_KEYUP to notepad's edit control. The following example works, if I send a VK_F5: Notepad inserts the current date and time. However, If I try to send a simple h,

用Selenium WebDriver滚动到元素

I want to create a function that takes the class name as a parameter. This method tries to click on the element. If it fails, it scrolls to the element and tries to click again. That’s it! I want

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